A full-face diaphragm on a shield offers means of driving tunnels through soft, wet alluvial soils such as are often found in estuaries. This paper describes an investigation of small diameter tunnels driven at three such sites using the full-face diaphragm on a shield. It was found that this arrangement can successfully drive tunnels through both very wet and very soft ground. Reasonable agreement was found between the observed and calculated ground resistance to driving. The importance of accurately determining the nature and depth of the strata during the site investigation is emphasized.

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  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • McCaul, C
    • WEST, G
    • Manlow, T V
  • Publication Date: 1978-7

Media Info

  • Features: References;
  • Pagination: p. 23-25
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00188993
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 11 1981 12:00AM